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BEIJING, March 22 (Xinhuanet) -- NASA scientists are testing its next-generation Mars rover, which will land on Mars next year, under extreme conditions at space-simulation chamber in California, media reports said Tuesday.Scientists at NASA's Jet Propulsion Laboratory in Pasadena, Calif., say they've installed the Curiosity rover in a space-simulation chamber that can mimic the environment the probe will encounter on Mars.  After the chamber's large door was sealed last week, air was pumped out to near-vacuum pressure, liquid nitrogen in the walls dropped the temperature to minus 130 degrees Celsius, and a bank of powerful lamps simulated the intensity of sunshine on Mars.After the test period, the rover along with other portions of NASA's Mars Science Laboratory spacecraft including the cruise stage, descent stage and backshell -- part of protective covering -- will be shipped to the Kennedy Space Center for final preparation for the launch window from Nov. 25 to Dec. 18, 2011. Curiosity will study whether a selected area of Mars has offered environmental conditions favorable for microbial life and for preserving evidence about whether Martian life has existed.

BEIJING, Feb. 15 (Xinhua) -- Chinese Vice Premier Wang Qishan told a U.S. business delegation Tuesday that China would create a sound environment for business cooperation between the two countries.Praising the contribution of U.S. businesses to the sound development of China-U.S. relations, Wang said more exchanges between business people from the two countries would help promote bilateral trade cooperation.Chinese Vice Premier Wang Qishan (C front) poses for a group photo with members of a visiting U.S. business delegation headed by John Mack, chairman of Morgan Stanley, in Beijing, capital of China, Feb. 15, 2011. Executive chairman of Morgan Stanley and chief delegate John Mack said the U.S. business community would increase exchanges and cooperation with Chinese counterparts and play a positive role in the sound development of bilateral relations.The delegation, composed of the heads of many major U.S. companies, including General Motors, is visiting China from Feb. 13 to 16 for unofficial exchanges with Chinese businesses, including China National Offshore Oil Corporation and CITIC Group, according to the China Council for the Promotion of International Trade.

SHANGHAI, Feb. 19 (Xinhua) -- Shanghai and several other Chinese cities have moved to restrict home purchases in a bid to deflate bubbles in the real estate market.The rules, which were revealed by Shanghai's Housing Guarantee and Administration Bureau on Saturday, prohibits new home purchases from locally-registered families who have owned two or more homes and non-local registered families who have owned at least one home.Additionally, non-Shanghai registered families who have no documents certifying they have paid for social security or income tax in the city for one year are banned from buying property.Sales of commercial homes fell 42.4 percent year on year in Shanghai in 2010 as earlier measures to curb the speculative demand in the real estate market took effect.Despite the fall in sales volume, the average price of new commercial homes rose by 7.6 percent to 20,995 yuan (3,200 U.S. dollars) per square meter last year.On the same day, authorities in the eastern city of Nanjing and the northeastern city of Harbin rolled out similar purchase restrictions.On Wednesday, the Beijing municipal government unveiled even tougher measures to prohibit home purchases from non-local registered families who have no proof of social security or income tax payments in the Chinese capital for five straight years.The purchase limits came after the State Council, China's Cabinet, ordered late last month that cities where home prices are skyrocketing must implement strict measures to restrict home purchases over a period of time.The State Council also said that local governments will be responsible for the stable and healthy growth of property markets and are required to publicize, before the end of March, the annual "controlled" price targets for new homes.China has implemented a series of measures since last year, which includes higher down payment and lending rates, and bans on mortgage loans for third homes, to rein in the rapid rise in housing prices.Soaring prices have become a major concern for urban Chinese residents as more homes turn unaffordable. In fact, home prices in some major cities such as Beijing have more than doubled over the past two years.

SAN FRANCISCO, March 29 (Xinhua) -- Amazon.com Inc. on Tuesday announced the launch of an on-line music storage service,which enables users to store digital music in the cloud and access it from computers and devices running Google's Android operating system.The new service, called "Cloud Drive," offered customers five gigabytes of free storage on Amazon Web servers for all kinds of digital files, including music, photos, videos and documents. For paid plans, users can purchase storage space starting at 20 U.S. dollars a year for 20 gigabytes.The on-line retailer also launched "Cloud Player for Web" and " Cloud Player for Android." The former allows users to get the media files they stored on Amazon's servers from a Web browser on a Mac or PC. The latter lets users play music they have uploaded on Cloud Drive, computers or a smartphone that runs Android operating system.Analysts said Amazon is stepping up its rivalries with Apple and Google. Both companies are also working on similar services, allowing users to store their music on-line and access it from any compatible device.Media reports said that Apple was pushing hard to launch a digital music locker service in April. Google was also reported to be testing its own digital locker service but it still needs to make agreements with major music labels.

GUIYANG, Jan. 30 (Xinhua) -- Chen and her mentally handicapped son moved into their newly finished home last December. Shortly afterwards, a month-long cold wave with heavy snow hit their hometown, as well as the majority of southern China.It would have been "terrible" to stay in the old home in such cold weather, said 66-year-old Chen Houlian, a villager from the Tongzi County of southwestern China's Guizhou Province.Dropping temperatures and occasional sleet were predicted before this year's lunar New Year festival, which begins next Thursday.Behind the new home stood their old adobe cottage, with visible cracks on the clay walls. Wooden doors and window frames of that cottage were covered with black smoke due to more than 40 years of indoor cooking, while those of the new house were painted bright blue.In fact, the old house might collapse after the heavy snow, according to Jin Jing, deputy head of the County.Chen's family was one of the poorest in town. The farmland they grew crops on barely produced enough corn and cabbage to meet their needs, while the minimum living subsistence allowance of 2,200 yuan (334 U.S. dollars) each year was their total annual income.They would never be able to afford to build a new home on their own without receiving financial aid from a government project, Jin added.Chen's new house cost over 40,000 yuan. They received 20,000 yuan from the project and 5,000 from the local federation of people with disability. The rest was borrowed from relatives and neighbors.Five pairs of red couplets were posted by each door and window to express their gratitude to all the people who had offered help.On the day they moved in, Chen held an outdoor banquet for the entire village using borrowed money to mark the happiest event this family had witnessed for many decades.The government-funded project was launched over two years ago, after a deadly snow storm hit southern China during Jan-Feb 2008, collapsing nearly half a million rural houses and causing damage to another 1.7 million.The project was designed to provide funds to residents living in dilapidated buildings in impoverished rural regions so they might renovate or build new homes.In Guizhou alone, over 600,000 families had finished building new homes by the end of 2010 with help from that project, as over 4.7 billion yuan was allocated to subsidize this building.The project was part of China's efforts to build its social-security-based housing system, which also includes affordable housing, low-rent housing and public rental housing programs to meet the needs of low-income people amid surging property prices across the country.